Vibration-proof pipe joint



5 c. s. GILLEfTE ET m. 2,024,215

VIBRATIONPROOF PIPE JOINT Filed March 20, 1934 ET IN TORS CLHU S. G/LLETTE: BY fls/vossso/v 15. GPEGOEX ATTOEEEY Patented Dec. 17, 1935 UNITED STATES VIBRATION-PROOF PIPE JOINT Claude S. Gillette, United States Navy, and Henderson B. Gregory, Washington, D. C.

Application March 20, 1934, Serial No. 716,510

1 Claim.

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) This invention relates to an improved vibration-proof pipe joint especially intended for making connection with extremely thin piping or tubing which is subject to the stress of vibration,

such as on shipboard where there is generally a great deal of vibration present in the engine room and where it is nevertheless very desirable to use extremely thin piping or tubing so as to keep the total weight to a minimum.

Another object of this invention is to provide an improved pipe joint wherein a thin piping or tubing is welded, brazed, soldered sweated or otherwise suitably secured to a sleeve member, which in turn carries a flanged nut meml5 her for adjustably and securely fastening the pipe to a thread placed on a fitting of usual thickness.

In the drawing:

Fig; l is a plan view of a valve fitting using this joint for connection to the piping;

Fig. 2 is a perspective view of an elbow making use of this joint;

Fig. 3 is a sectional view through the joint or coupling.

There is shown at In the piping or tubing which is very desirable for use on board ship in that it is extremely thin, yet capable of withstanding the necessary pressure and vibratory stresses. It has been found, however, that while the thin tubing or piping I0 can withstand the necessary pressures, it can not stand having a thread cut into the ends thereof for the purpose of making joints with other fittings because the vibration always present on board ship soon weakens the tubing In at the thread, causing the failure of the pipe with attendant dangers, as when live steam or oil escapes therefrom. An obvious remedy would be to make the tubing ill of thicker material but this would be uneconomical and disadvantageous in that it would greatly increase the total weight thereof which, in the case of a large ship, would amount to many tons.

At H is shown the end of a fitting which may be an elbow l2, a valve member I 3, or any suitable fitting that is desired to be connected to tubing 10. The fitting II will, of course, be made of the usual thickness of material and terminates in a flanged end It threaded at ii. In order to adapt the pipingor tubing III for connection with the threaded end I! of fitting ll without cutting threads on the tube, it is provided with a sleeve I 6 which is of a substantial diameter and may be made of steel, bronze, brass or other suitable material. The internal diameter of sleeve I6 is increased as at IT, allowing the end of tubing ill to be inserted into sleeve It as far as the shoul- 5 der I8. The end of tubing I 0 is then welded, brazed, soldered, sweated or otherwise suitably secured to the sleeve I6, as at I9, by any suitable process, depending on the composition of the materials of which sleeve I 6 and the pipe or tube 10 III are made. The end 20 of sleeve I6 is semispherical so that it may properly be secured against the 45 socket 2| in the end of fitting I I. The sleeve I6 is provided with a flange 22 that'- cooperates with a flange 23 on a female nut 24. 15 This nut 24 will draw the sleeve It with its secured tubing l0 tightly against the fitting'l I.

Should sleeve l6 be slightly out of alignment with fitting II, the semi-spherical seating on the end 20 of the sleeve IE will adjust itself to a proper 20 seating contact against the 45 socket 2| in the end of the fitting H as the nut 24 is tightened. The tubing III, which is extremely thin, permitting such adjustment through very slight deformation or springing of the tubing l0 without injurious effect. As a result of this manner of making the joint, the tubing I0 is secured to fitting ll without cutting any threads in the tubing and without in any way weakening it either as a result of the presence of such threads or as a result of its being deformed or sprung while being joined to the fitting. This is extremely desirable, especially on board ship, where the saving of weight in every possible manner is desired.

This invention may be manufactured and used 35 by or for the Government of the United States of America for governmental purposes, without a the payment of any royalties thereon.

We claim:

A vibration proof assembly for joining two ex- 40 tremely thin pipe sections together including a male member secured to one of said pipe sections,

a female member secured to the other said pipe section, said male member having a semi-spherical end, said female member having a beveled end 45 and means for forcing the semi-spherical end of the male member into tight contact with the beveled end of said female member.

C. S. GILLETTE.

HENDERSON B. GREGORY. 

